Platform cover turning machine



Aug. 31, 1948. R. H. LAWSON I PLATFORM COVER TURNING MACHINE 7Sheets-Sheet 1 Filed Dec. 31, 1946 fiwn for. Robe rt 11 Lawson Aug 31,v194 8..

R. H- LAWSON PLATFORM COVER TURNING MACHINE 7 Sheets-Sheet 2 Filed Dec..31, 1946 Robert H Lawson Aug. 31, 1948. R. H. LAWSON 2,448,102

' PLATFORM COVER TURNING MACHINE Filed Dec. 31, 1946 7 sheets-sheetsInventor Robert H Lawson 1943. R. H. LAWSON 2, 448 ,1 O2

PLATFORM COVER TURNING MACHINE Aug. 31,1948. I W N 2,448,102

PLATFORM COVER TURNING MACHINE Filed Dec. 51. 1946 I 7 sheets sheet 5 35g I i 160 i.

254 z -591. 3 Mt 36 I I L u E 5'36,- r 3 I 332 I I v m Inventor J50 J243 oberzfilazuson. 4 276 v 20 0 e5 Aug. 31, 1948. LAWSON 2,443,102

PLATFORM COVER TURNING MACHINE Filed Deb. 31, 1946 7 Sheets-Sheet 6Inventor Robert Lawson R. H. LAWSON 2,448,102

7 She'ets-'Sheet Inventor Robert H Lawson.

Aug. 31, 1948.

PLATFORM COVER TURNING MACHINE Filed Dec. 31, 1946 3 tion wherein theplunger I4 is up out of contact with the" work, and the lever and thearm are;-

moved downwardly by a mechanism which. will later be described. Eachdownward movement of the lever and the arm causes the workengag-.

ing members to perform their respective operations.

The tool I6 (Figs. 1, 2, 5, 6 and 11) is an arcuate giant ;-by a pin I28(Fig, 5) upon the lever 38 is a demember (Fig. 11) engageable with thetoe or heel end of the shoe to push the shoe forward far enough toenable the midsole at the end of the.

shoe to clear the edge of the turning tool II). It

pending dog I22, the lower end of which is engageable with the abutmentH8 to swing the lever I88 in a clockwise direction as the lever 38 has arearwardly extending shank GI which is clamped to a bracket 62 by ascrew 64 extending through a slot formed heightwise in the shank 6| toprovide for heightwise adjustment of the member I6. The bracket 62 iscarried upon a block-shaped end portion 65 (Figs. 5, 6, 10, 11, 12, and13) of a bar 66 and is secured upon said portion 65 by a pair ofclamping screws 68 passing through slots I to provide for forward andrearward adjustment of the member I6. The bar 66, at its block portion65, is pivotally connected bya pin I2 (Fig, 6) to the'upper ends of apair of parallel swinging arms or levers I4, the lower ends of which areintegrally connected by a hub I6 which is rotatableupon a fulcrum pin I8secured in and extending across the head 22. The bar 66 at its rear endis pivotally connected by a pin 88 (Figs. and 6) to the upper end of alink 82. The lower end of the link 82 is pivotally connected by a pin 84to an arm 86 substantially parallel to thebar 66, the arm 86 beingmounted for free swingin movement upon a pin 88 secured in and extendingacross the head 22. .The link 3."

82 and the arm 86 support the rear end ofv the bar 66 against undesiredlateral movement while leaving it free to move longitudinally andheight.- wise. Acompression spring 9!) bearing against a fixed portionof the head 22 yieldingly holds a the'lower end of the link 82 in anupper limiting position which is adj ustably determined by a stop screw92 threaded into a fixed portion of the head 22 and having its headengageable with V a pair of ears 94 formed on the link 82.

, Freely rotatable upon a stud 96 (Fig. 5) secured in the right-handlever I4 is a roll 98 en gageable with the operative face of the cam 68,the roll 88 and the cam 88 thus constituting-a pair of cooperating camelements. A tension spring I88 anchored at one end to the lever 38 andatits other end to the bar 63 urges the bar rearwardly to maintain theroll 98 in contact with the cam 60. 1

. The friction tool I8, whichv is best shown Figs. 2, 5, 6, l1, l2, and13, consists of a plate hav; ing a concave work-engaging face upon whichare formed upwardly directed teeth I82 which engage the platform cover Cand urge it upwardly to facilitate its being turned over the U-shapedturning tool. The upper portion of the friction tool I8 is slotted atI83 (Fig.1.?) to accommodate the shank 6| of the pushing tool I6, saidshank serving to guide the tool I8 in its heightwise movement. The lowerportion of the tool I8 (Fig. 6) has formed uponit a hub I04 by which thetool is pivotally mounted upon pin I86 carried by a lever I88. The hubI84 is'slott ed (Fig. 13) to accommodatethe upper endof a tension springH8 which is secured to thepin I86. The lower end of the spring III) isanchoredto a pin I I2 (Fig. '6) secured in a stationary portion of themachine frame. The lever I88, which is in the general shape of theletter H (Fig. .13), consists of a pair of parallel lever arms connectedby a I descends, thereby raising the tool I8. hintheblock portion is apin I24 against which Secured the dog I22 is yieldingly held by atension spring I28 secured at one endto a lug extending from the dog andat its other end to the lever 38. The effect of the spring I26, is tourge the dog I22 in a clockwise direction to yieldably maintain itsforward face against the pin I24. Formed upon the forward face of thedog I22 is a cam rise I28 which, as the dog descends, engages the pinI24 to swing the dog in a counter-clockwise direction and therebydisengage it from the abutment H8 to release the .tool I8,therebyenabling the spring I I8 to retract the tool I8. The pin I24 may,for the purposes of adjustment, be provided with an eccentric diskportion like the disc II8 shown in said applicationserial No. 656,457.In order to hold the tool I8 against the platform cover,

f; there is provided a roll I38 (Figs. 5, 6, and 12) which engages aridge I32 (Fig. 12) formed upon the rear face of the tool I 8. A torsionspring may, if desired, be employed to hold the tool' I8 back againstthe roll I88. The roll I3!) is freely rotatable upon astud I34 securedin a bracket I86 (Figs. 5, l0, and 12) which in turn is clamped upon theblock portion 65 by a clamping screw I38. A horizontally extending slotin the bracket I36 accommodates the screw I38 for forward and rearwardadjustment of the bracket I36 as shown in Fig. 12, The ridge I82 extendsfrom the top of the tool I8 down to about the level of the lowest toothI82 on the operatinglface. When the tool I8 has risen to a point atwhich the lowest tooth is in engagement with the platform cover theridge I32 will ride off the roll I30 and release the operatingpressure-ofthe tool I8 against the work. The bracket I36 may be adjustedforward andrearwardly on the block portion 65 to vary the position of.the roll I38 for different thicknesses of the platform covers on varioustypes of shoes, and also for varying the pressure which the tool exertsagainst the work. Downward movement of the tool I8 is limited ,by a stopI48.

Theturning tools I0 and I2- are adapted for operation at the heel andtoe ends of theshoe, respectively. These members are stationary whilethe operation is being performed, but theyare mounted for movement toenable either to be moved into its operating position while the other ismoved out of operating position. To this end, these tools are mountedupon the top of a sector shaped bracket. I42 (Figs. 1 and 2) which, atits lower end, is mounted for transverse swinging movement upon a pivotpin I44.- This pin I44 is rotatable in a bearing formed in the lower endof a bracket I48, the upper end of which is secured by clamping screwsI48 to the forward face of the head 22 A. block I50 carried byanupstanding stud I52, which is secured in the bracket surface of theperipheral rim of the sector-shaped bracket I42'to guide the bracket inits swinging movement. Extending across the slot I54 is a pin sa e-artsllili tiiigs. '2; r; zfis'and'i 75' having eecentric bearing portions:-I sun which areirrotatable in the :fiange l flsto providefortaddustment;This pin. I58 engages-:thezrleftehand:end: face ofthe? block I to stoiitheobracketx-1.42; in proper; position to bring thehlreeh turnin'gtools HI into." register with the otherzmork engagingsmembers of themachine. drsimilari i-stopw n:162;':(Eig; 2-): engageable with therightehain ace ofstheblock' 150i is provided tosstop theibraoketz I42with' the toez turning tool t2 improp er operating position.

srilhe'itool li'lflwli'igsa 1,2,.: 5, .6=-and 14) is'a -U- shaped membereomprising a curved rear portion f-mmcwhich a; pair of. substantiallyparallel arms extend forward, thist'sh'a'pe being such as to enable thememberto engage the heeiend of a shoe. Itfisioomposed otspring steel'andis supported by rpairr of iintegral v downwardly extending arms Hi4so each onsitsi'side portions; :t'he lower" ends ofseachipair of arms 64are integrallyconnected by arbaseipbrtioniifilie Theright-hand baseportion: 188a (Fig-L 14')" iswclamped "by screws I68 to an upstanding-Slug-110' :iormed upon aslide I12. The rleft handflbaseportion-186 isclamped by screws-4.114 townupstanding lugxl fli formed on af-rs lide118;:1The slides I 1mm. I18 are'slidable uponi a'i flatLfaceefQrmedLonthe: periphery of the ssector shap'ed bracket: I42. Four: guidemembersnlndicateduby the: reference characters: .I 80, I823).l84;iandiil'86;:are secured:.upon the hat face oflthenbracket lfl in.such'a way as'to form two guideways in whichsthe respective slides aremovable"; .aAs shown inil lig-z 14," the guideways thus provided forthefsli'de's' il'll and l18 are angularlydisposed tbweach other by:approximately 120- i'ii the form of the letter V Theinherent-resilien'eeoffthe-"spring steel,-of which the tool I0 and it'sintegral supporting-members are formed, norma-lly maintains the tool inopen position enabling it to fit the heel of a larg'c sized 'shoe. T0adapt the-tool l-0 to fit' a smallersized' shoe I the slides f1 i -and'I TTma y-bemoved closer-together to bring the operatingpo'rtiorio'f thetool l0 into thedash line position indicated in Fig. 14. I This adjust-'ment' is efiec'ted by means of a hand 1 lever" 5 I 88' ivotauy mountedupon a fulcrum pin I 90 secured iiithe periphery of therbracket I42.Extendin'g "from the'-- lever I88 is an integral arm 192 having "a;rounded l end which engages a rounded notch i-n the slide I121" Theswinging movement ef th'e 'lever about its fulcrum serves to move theslide H n -along its guideway Equal and oppo site=movement of" the slidel 18 "is simultaneously eflected 'by means of a bell crank l 94pivotally mounted s'upon' a-fulcrumpin I I 96 secured-in the brachetl-42 and having a pair of "arms with rounded ends [whichengage":r'ounded' notches formedgrespectively, in thelever I88 and theslide FIN-While, as:has already been stated, the resiiien'ce of thetooldtselftends to maintain it in a position offadjustment forlargezsized shoes; the tool; -can= be held fin the Lvarious positions ofadjustment for-itsmaller' sizes-by means: of a' ratchetlflfisecur'edbmstuds I99. upon the iface of the bracketed-'42 andtengageableby' a multi-toothed pawlmlli'formed uponatslide' 202; A pairofstuds 204 threaded into' the lever l 88- and engaging Ion:-gitudin'alslots formed. in the slide 202' guide the slide-sforimovementto engage the pawl 208 with ottdisengage itfrormthe ratchet I 98. Ahand'grip 2 88 havingi'a bell=crank-exterision by which itis fulorumedguponone 0131 the studs '204 is pivotally connectedoby :a :pin". 208 to a.lug extending from the slide-x202. A: spring 209 normally holds. thehandigripiillfiraway fromztheleven:[88.12: Theopeerato'r; a by squeezingi the": hand iigripli 206}- as he graspstheihand leyer l88;i;cadisengage the pawl i-rom the ratchet tosenable him-to make the desiredadjustment; 1 1 i"Thefltoewturningnitoolil2 is in a general-sway similarto; th'e'I-heelr turning tool I 0 but its; forwardly-extending armsidiverge to ienable it t'o conform to :thetoe end of: azshoe; Ithas, on,each side, a depending: integral portion 218 generally similar .tothecorresponding portions of the tool l 0;: r The left-hand: dependingportion 2| 0 :of: the tooltl'2 is securedto annupstanding lug 212 formedon: a: slide 2 l 4. I The: right'rhand depending portion .2I0 is1securedto an-upstanding lug 2l6 formed on a slide 218. The slides 2| 4- and 218are slidable in'ani areuate guideway: formed by four guide members, 220,222, 224, and 226 secured ton-a fiat face of the brack'et I42.Adjustment-of the toe turning tool "simultaneously with that of theU-turning tool I10 iseffectedby means of a threee-armedlever 228fulcrumed=upon a pin 2-38 secured in the bracket i42and having arr-arm232z with a rounded-end engaging a notch'iorm'ed in ansextension 234. ofthe adjustinglever [88. Anotherarmr2'36 extending from the-lever: 2 28has a rounded end engaginga notch in the-slide M4 to move theislide initsguideway: Theth'i'id arm of: the :lever' 228 has a roundediend '238'which engages a rounded notch. formed in one arm of a bell crank lever240 ifulcrumed'uponapin- 242 secured in the'bracket' 142. a, A secondarm ofthe bell crank lever 240 has" a rounded end 2'43'whi'ch engages anotch in the'slide 2 l8. 7

i The purpose of the angularly' dispcsed' guide- Ways 1 for the slidesof thetdoli0 and the ancuate guidewa'y: for the: slides of the tool 2'is'to insure that the positions of the most rearward points; P and P asshown -on Fig; 14,"-of the work-engaging 1 portions of these tools willnot vary "tor-'- w'ardly or rearwardly whenthe tools are adjusted for-r.liiferen t sized-shoes. The angularly disposed gui cl'eways for the'tool l Il -maintain the forward-1y extendingarms of that U-sha'ped toolsubstantially:parallel-for all- -size adjustments,- and the arcuategui-deway for-the tool 12 insures an increase inwthe divergence" of the-forwardly extendirrg arms of that U-shaped tool ais-the tool is.adjusted for larger sizes, I

' 'Th-e--ma chine is ds'iven by a motor 244 (se'e Fig.1) mountedupon abracket 246 which iS'SE- cure-d upon the rear -wall of the coluimn' -20Jshown in Fig; 1 the rearwall of the sheet metal columnhas -an openingwhich extends vertically and at'theedges'ofwhich the material which formslth e column-has inwardly extending flanges 25. 5; -=-Secured uponthe shaft of the motor-244 is apulleyn248- which'drives a belt 250; Theupper or the belt 250 is" looped about a pulley 252 which rotatesireely2up0m'ball bearingsand WhichJi-s thu-s'z coniti-nuously driver Theinner raceway of the ball bearings (Fig. 4) is-secureduponrth'e-redu-ced end of a stationary. shaft -2-54 and it holds; thepul-leyv against longitudinal movement; .The shaft 254: issupportedatits forward end by a boss 1256 which extends upwardly-from the base23andnat its midrpcmtion inxaa b'oss 258, which also extends upwardlyfrom the base. 2 3. The reduced rear portion of; the shaftlZSWeXtend-sthrough an opening in the rear cover .28 and has ,threaded'upon" it anut 260 which, whenjtightenedserves to hold the-abovementioizie-dinnerraceway against a: boss extendin'g inward-1y from the cover 28,therebyholding the shaft -2 54 Lagainst axial and rotary movement; Al-set sorewisecurestthe v-fiorwards-endofz-the shaft 254 in thebo'ss256to'assistthe nut 260 in norm ing the shaft stationary. Freelyrotatable upon the shaft 254. is a clutch member 262 having a hub 264and a facing 2-66 of friction material which is engageablewithktheladj-acent face of the pulley 252. The hub 264 is slidableaxially upon the shaft 254to, enable the clutch to be engaged anddisengaged. Mechanism for operating the clutch will late-r be described.

Secured upon the hub 264 is a pinion 268 (see Figs..4.and )which drivesa gear210 secured upona "hub 212. This hub 212 is freely rotatable upona stationary countershaf-t 214 secured at its forward endin a boss 216extending upwardly from the base 23 and at its rearward end by a boss218 also extending upwardly from the base plate 23. A pinion 280 securedupon the hub2'i2. drives a gear 282 secured upon a hub 284 which isfreely rotatable upon the stationary shaft 254 and which is held againstaxial movementof saidshai t by the engagement of its ends with finishedsurfaces on the bosses 256 and 259. Secured upon the hub 284 is a pinion286 which meshes with a vertical rack 288 formed ,upona rack bar 290.This rack bar is guided for heightwise movement in a guideway formed inthe boss 256. Pivotally connected to the upper end of the rack bar 290is the lower end of a link. 282, the upper end of this link beingpivotally connected to the lever 38.

When the clutch is disengaged the lever 38 is normally held in itsuppermost position by a, pair of parallel tension springs 294 (Figs. 1and 2). the upper ends of which are anchored in the base 23 and thelower ends of which are secured to a cross bar 296 secured :to the lowerend of a vertical rod 298. The upper end of the rod 298 is secured inthe rack bar 290, the rod 298 thus forming a downward extension of therack bar. The lower end of the rack bar 290 extends through an openingin the base 23 and it has mounted thereon a padded washer 300 whichengages the under-surface of the base 23 to limit the upward movement ofthe lever 38 under the influence of the springs 294.

The clutch above described is engaged by the depression of a, startinghandle 302 which extends forw-ardly from a hub 304 (Figs. 2 and 3) whichis freely rotatable upon a shaft 306. This shaft 306 is freely rotatablein a bearing formed in a boss 308 (Fig. 4) on a side wall of the head 22and in another bearing 'formed in the boss 258. The hub 384 extends tothe left of the head 22 through an opening formed in the "left-handcover plate 26. Extending upwardly from the hub 304 are a Ipair of armsSM and M2 (see also Fig. 7). Securedupon the outer end of the shaft 306is a hub 3l4 from which an arm 3l6 extends upwardly and inward-1ybetween the arms 3|0 and 3|2. A spring 3l8 housed in the arm 3l2 andbacked by a screw 329 bears against the arm 3l6 to hold the arm 3I0normally against the arm 3l6. Depression of the starting handle 302operates yieldingly, through the spring 3H1, to rotate the arm 3l6 in aclockwise direction as viewed in Figs. '1, 8, and 9 and :thus to rotatethe shaft 306 also in a clockwise direction. Such depression of thestarting handle 302 is limited by a stop screw 32! threaded foradjustment through a lug 323in the cover 26 and engageable by the arm3I0. Secured upon the shaft 306 is a hub 322 (Fig. 3) from which extendsrearwardly an abutment lug 324 (Figs. 8 and 9). Engageable with the lug324 is the lower end of an arm 326 which extends downwardly from ahub328.- Apivot pin 330 extending through the hub 328 connects the upperend of the am 328 with a lever 332 having at its lower ends. hub .333which ismounted for rotary movement upon a fu'lcrum pin 334 secured atone end in a boss on the head 22 and at its:;:other end in the boss 218.The lever 332 has-a portion 336 which extends upwardly on one side ofthe hub 264. An arm 331 extends upwardly-from the hub 333o-n thevopposite side of the hub 264, and a pair of co-iaxial diametricallyopposed pins 338 secured respectively in the portion 336 and "the arm331 extend into a circumferential groove 340 formed in the hub 2'64 andserve, upon movement of the lever 332,: to shift the movable clutchmember 262 into and out of engagement with the pulley 252. It is evidentthat'with the construction so far described, depression of the startinghandle 302 will cause the abutment lug 324 to push the arm 326 upwardlyand thereby swing the lever 332 in a counter-clockwise direction asviewed in Figs. 8 and 9 to engage the clutch and thereby start the driveof the machine;

To prevent the clutchfrom being engaged, except when either of theturning tools 10 or I2 is. in its operative position, there is provideda safety lever 342 which extends forwardly from a hub 344 (Fig. 3)through openings in the front wall of the head 22 and in the bracketI46. The hub 344 is secured by a set screw upon the shaft 306. Extendingupwardly from the hubs 333 and 322 are arms 345 and 346. A tensionspring 348, secured at its ends to the arms 345 and 346, normally holdsthe clutch disengaged, and itialso holds the safety lever 342 up inastop position determined by the engagement of a stop screw 35% (Figs. 8and 9) threaded downwardlythrough a lug 352 formed on the hub 344, thebottom of the screw 350 beingengageable with the head of a screwthreaded into the base 23. 7

Accidental engagement of the clutch is prevented by an arcuate surface354 (Figs. 1, 3, '1 and 8) formed on the periphery of the sector I42 andconcentric with the pin I'4'4, this-arcuate surface extending under theforward end of the safety lever 342 to prevent depression thereof. Thesector 142, however, has two notches formed in its periphery, one or theother of which is in register with the safety lever 342 when thecorresponding turning tool ID or i2 is in its operating position One ofthese notches is indicated on Figs. 1, 5and 6 by the reference numeral356. As long as the surface 354 is under the end of the safety lever 342the shaft 306cannot be turned and the clutch, therefore, cannot beengaged.

Dlsengagement of the clutch at the end of an operation is effectedautomatically by a block 358 (Figs; Sand 9) secured upona face of-thegear 282 and engagoablewith an arm 363 extending from the hub 328.Rotation of the gear 282 causes-the b1ock358 to descend and, uponengaging the arm360, to rotate the hub 328 and, therefore, the arm 326in a clockwise direction to disengage the arm 326 from the abutment lug324. The spring 348 thereupon swings the lever 332 in a clockwisedirection and disengages the clutch and, as soon. as the operatorreleases the starting handle 302, this spring s'ervesalso to raise thesafety lever. 342 into its normal position. A spring-pressed plunger362. housed in a hollow boss on the lever 332 bears against the arm 326'torestore the arm to its position of engagement with the abutmentlug 324as soon as the starting handle 342 hasbeen rais-edinto its normal position. A spring 364housed in a block 366, mounted for heightwiseadjustment? on the boss #58, cushions the downward-=movement 'oi" thearm 360- and absorbs the momentum of "the gear 282 when the arm 36!! isstruck by the block 358. Extending rearwardly from the hub 328' isan arm368 which normally engages a 'fiat'surface on the lever 332 tonmitthecounter-clockwisemovement of the arm 325 -under-theinfluence ofthe-springpressed plunger 362; normally holding it in position to engagethe abutment lug-324.

' In the operation of the machine-one end of the'ishoeis mounted uponone of'the -U-'shaped turning tools, the heel-end, for example, upon thetool in while the bracket l'fleccupies -the'lefthand limit of its rangeofmovement-to maintain 1 the 'tool ID in its out-of-the-way position. Aconvenient way of mounting the heel end ofthe shoe upon the toolisdescribed in Letters Patent No. 2,422,737 above mentioned. The bracketM2 is then swun'gtothe right-handlimitof its range of movement to bringthe tool I'D into operating position and th'estarting handle 302is'depressed to start the power drive of the machine. I

The lever38 is thus lowered, against the force of-the' springs -2 94,'bypower exerted through the clutch andgearing above described. Asthelever 38" descends, it brings the plunger I4 into contact with the shoebottom' and causes the plunger to push the heel 'end' of "the shoe downinside'the tool m; thereby obligingthe cover 0 to turn right side outover the tool. The resistance encountered by the plunger l4 uponengaging the shoe bottom causes'the plunger to swingforwardabout the pin34, thereby urging the shoe forward to enable the extension of theplatform of the shoe toclearthe tool and pass down within' the toolySuch for-- held down in a stop position by thespring' 90;

which urges the rear endofthe ba'r'tii'up as far as permitted by thestop 921 The normalheightwise position or the tool I26 maybe'adjustedror' various thicknesses of the covers tobe turned and i alsovforthe various degrees of frictional pressure= desired; by turning thethreaded stop 92to' vary the-height of its head. Thetool I'G 'is free toyield up, compressing the spring 9|] in response to the thickness of thecover. a

The friction tool 1 8 is oTteh des-irable for work upon ileatherplatform-covers which are relatively stifi and resistantto the turningoperation. it

is "raised by the descending-tip of the dog 122 which'engages theabutment l l8and swings-the lever lilil'in a clockwise direction asview'ed -in Fig; -'5. The-degree of pressure-ofthe-tool i8 againstthe-Work is determined by adiusting t'he bracket 'i ifiiorwardlyorrearwardly andfif the nature of the work doesnot require its ;use, =the" tool I8 'may readily be adjustedrearwardlyfto an inoperative positionoreven-removed-from the machinei The tensioning effect of the tool 'ljfiis usually desirable when workinggupon leather' cove'rsas well as uponcovers of more'flexible material; but 'in. thepcase of unusually stiffwork it maybe lightened or'eliminated'by downward adjustment ofjthe'stop The operator j has continuous "control; over the Q power driveninstrumentalities "during? the already described.

10 corirseof the operation. He can lighten his pressure'on thestarting'handle 302' and permit the clutchto slip," oneventto'disengagewhen there is any danger of thestrain .upon the work becoming'excessive :and; while the moving parts are thus rendered stationary; orreturned by the s'prin'g294 to their initial positions;"he may ma;nipulate the work as conditions may require before'making afresh start..After'the'plungerfl; the pushing tool 113' and the friction tool I 8l'iave performed their respectivepperations in the manner already"described, and as the rack" 290 reaches the "iower limit of its range ofmovementj the clutch member 262, is automatically disengagedand'thesprings 294 restorethe power driven. memberstotheir initialpositionsfiThe operator then removesthe shoe from 'the"heel turningtoo], and mounts thetoe endof the'shoe uponthe toe turning tool 1'2 hethen'swings the bracket! to theleft-hand limit of"itsf'range of movementto bring the too'llZ' into operative position and depresses thestarting"'handle"302j whereupon the power driven membersgagainper formtheir respective'operations in'themaniner Having described my invention,What I claim as new and. desire to secure by 'LettersPatent of theUnited States is; I v I '1. A platform cover'turning. machine compris-jing a pairof cooperating memberslconstructed and arranged to turn theplatform; cover of a shoeupon the operativemovementlo'f one'mern=" berrelative to the other memberwhile'said other member is stationary,"asupport'constructed and arranged for movement of said stationary'mem-lher into and out of'operating position with re-f spect to theoperatively movablemembeni'means for causing the operatively movablemember 'to perform its operative movementgandla' safety device normallyypreventing such operative movement, said'safety device beingconstructe'df and arranged toipermit 'such'operative movement when thestationary'member'is inits operating position. v

2. A' platform cover "turning machine comprise ing a pair of toolsadaptedfor operationupon the platformcover of ashoe at'th'e heel" and'toe ends respectively of the shoe, means 'cooperable' with either of'said tools'to turn the platformj coverya common support io r' said toolsmovable to bring either tool into operating'position with respect tosaid cooperab'le"turning"means while" bringing the other tool into anout-of -the-way position, means for causing'said'turning'means tocooperate with either ,of said tools toturn the platform cover, andmeans for preventing the operation ofsaid causing means when both toolsareout of operating position.

'3. A platform cover turning machine comprise 'ing a pair ofcover-turning, tools adapted to operate at the heel and toe endsrespectively of a shoe, a third tool movable in a predetermined path forcooperating with said cover-turning tools to turn the cover at the heeland'toe endsof the shoe, a carrier for said pair of cover-turn ing toolsmounted for movement to enable the. tools of said pairto be broughtalternatively into operative position relatively to the third-mew tionedtool, means for moving the third-mentioned tool to cause it to perform acover-turning operation, and means for rendering said moving meansinoperative whenever said carrier occupies a. position such that'neithertool of said pair is in its operative position.

4.] A platform :cover turningmachine compris l 1 ing a pair ofcover-turning tools adapted to operate at the heel and toe endsrespectively of a shoe, a third tool movable in a predetermined path forcooperating with said cover-turning tools to turn the cover at the heeland toe ends of the shoe, a carrier for said pair of cover-tuming toolsmounted for movement to enable the tools of said pair to be broughtalternatively into operative position relatively to the third-mentionedtool, a power driven means for moving the third-mentioned tool to causeit to perform a cover-turning operation, a clutch in said powerdrivenmeans constructed and arranged to be engaged by the operator and todisengage automatically at the end of a single operation, and means forpreventing the engagement of said clutch when the carrier occupies aposition such that neither tool is in its operative position.

5. A machine for turning the platform covers of platform shoescomprising a pair of coverturning tools adapted to operate at the heeland toe ends respectively of a shoe, a tool movable in a predeterminedpath for cooperating with said cover-turning tools to turn the cover atthe heel and toe ends of the shoe, a carrier for said pair ofcover-turning tools, said carrier being mounted for swinging movement toenable the tools of said pair to be brought alternatively into operativeposition relatively to the tool which is movable in a predeterminedpath.

6. A platform cover turning machine comprising a pair of cooperatingmembers constructed and arranged to turn the platform cover of a shoeupon the movement of one member relative to the other, means for movingone of said members operatively with respect to the other, a releasableconnection in said moving means, and means for releasing said connectionto terminate such relative movement.

7. A platform cover turning machine comprising a turning tool engageablewith the platform cover of a shoe, a plunger engageable with the shoe,resilient means normally holding said plunger in an initial position,power driven means for moving said plunger in opposition to saidresilient means to cause the plunger to move the shoe operatively withrespect to said turning tool, a releasable connection in saidmovingmeans, and means for releasing said connection to terminate theoperative movement of the plunger and to enable the resilient means toreturn the plunger to its initial position.

8. A platform cover turning machine comprising a tool constructed andarranged to engage within the platform cover at an end of a shoe, aplunger engageable with the shoe bottom to move the shoe relatively tosaid tool to cause the platform cover to be turned, resilient means fornormally holding the plunger away from the shoe bottom, operating meansfor causing said plunger to perform an operative movement, and means forreleasing said operating means from said plunger to permit th resilientmeans to restore the plunger to normal position at the end of itsoperative movement.

9. A platform cover turning machine comprising a turning tool engageablewith the platform cover of a shoe, a plunger engageable with the shoe, arack, a driving connection from said rack to said plunger, resilientmeans normally holding said plunger in an initial position, drivingmeans geared to said rack for causing the plunger to move the shoeoperatively with respect to said turning tool and in opposition to saidresilient means, a clutch in said driving means, and means l 2 fordisengaging said clutch to terminate the operative movement of theplunger and to enable the resilient means to return the plunger to itsinitial position.

10. A platform cover turning machine comprising a tool constructed andarranged to engage within the platform cover at an end of a shoe, aplunger engageable with the shoe bottom to move the shoe relatively tosaid tool to cause the platform cover to be turned, a member for pushingthe shoe longitudinally to cause the extension of the platform of thesho to clear the tool, a pair of cooperating cam elements through whichsaid pushing member is operated, a rigid member carrying one of said camelements, means for mounting said plunger on said rigid member, andmeans for moving said rigid member to cause the plunger and the camelement on the rigid member to move in unison.

11. A platform cover turning machine comprising a tool constructed andarranged to engage within the platform cover of a shoe at an end of theshoe, a plunger engageable with the shoe bottom to move the shoerelatively to said tool to cause the platform cover to be turned, a toolfor moving the sho longitudinally to cause the extension of the platformof the shoe to clear the first-mentioned tool, a tool frictionallyengageable with the platform cover to assist the plunger in turning theplatform cover over the first-mentioned tool, power driven means foroperating the plunger, the tool for moving the shoe longitudinally, andthe friction tool, a clutch in the power driven means, and means forautomatically releasing said clutch to stop the drive at the completionof an operation.

12. A platform cover turning machine comprising a turning tool adaptedto engage within the platform cover at an end of a shoe, means foreffecting relative movement heightwise of the shoe between said shoe andsaid tool to turn the cover, a tool for pushing the shoe longitudinallyto cause the extension of the platform cover to clear the turning tool,a longitudinally extending bar upon the forward end of which saidpushing tool is mounted, means for moving the bar longitudinally tocause the pushing tool to push the shoe, a swinging arm for supportingthe bar as the bar moves longitudinally, a pivotal connection betweenthe arm and the bar at the intermediate portion of the bar, andresilient means acting on the bar rearwardly of said pivotal connectionto cause the pushing tool to press the platform cover against theturning tool to frictionally retard th cover as it is being turned.

13. A platform cover turning machine comprising a turning toolengageable within the platform cover at an end of the shoe, a plungerengageable with the shoe bottom, means for moving the plunger to causethe shoe to be moved heightwise relativel to the turning tool to turnthe cover over the tool, a tool for pushing the shoe longitudinally tocause the extension of the platform cover to clear the turning tool, alongitudinally extending bar upon the forward end of which said pushingtool is mounted, means for moving said bar longitudinally to cause thepushing tool to push the shoe, a swinging arm for supporting the bar asthe bar moves longitudinally, a pivotal connection between the arm andthe bar at the intermediate portion of the bar, resilient means actingheightwise on the bar rearwardly of said pivotal connection to cause thepush-ing tool to press the platform cover against the turning t ol torictionally retard the cover as it is being turned, and an adjustablestop for limiting the range of action of said resilient means.

14. In a platform cover turning machine a resilient turning tool havinga pair of arms joined by a curved portion, said arms and said curvedportion being generally in the shape of the letter U to enable the toolto engage within the platform cover at one end of a shoe, a support foreach of said arms, and means for securing said supports in variouspositions of separation from each other to vary the shape of saidturning tool.

15. In a platform cover turning machine, a resilient turning tool havinga pair of arms joined by a curved portion from which the arms extendforward, said arms and said curved portion being generally in the shapeof the letter U to enable the tool to engage within the platform coverof a shoe at one end of the shoe, 2. support for each of said arms, aguideway along which each of said supports is movable, said guidewaysbeing angularly disposed to each other to provide a rearward componentof movement to the supports as the supports are moved away from eachother,

which rearward component compensates for the tendency of the curved rearportion of the U- shaped tool to move forward as the arms of the U moveaway from each other, and means for securing said supports in variouspositions of separation from each other to vary the shape of theresilient U-shaped turning tool.

16. In a platform cover turning machine, a resilient turning tool havinga pair of arms joined by a curved portion from which the arms extendforward, said arms and said curved portion being generally in the shapeof the letter U to enable the tool to engage within the platform coverof a shoe at one end of the shoe, a support for each of said arms, asingle arcuate guideway along which both supports are movable to varythe distance between them, said guideway being arranged to provide arearward component of movement to the supports as the distance betweenthem is increased, thereby compensating for the tendency of the curvedrear portion of the U- shaped tool to move forward as the arms of the Umove away from each other, and means for securing said supports invarious positions of separation from each other to vary the shape of theU-shaped turning tool.

17. In a platform cover turning machine, a pair of turning tools eachhaving a pair of arms joined by a curved portion, th arms and the curvedportion of each tool being generally in the shape of the letter U, oneof said tools being adapted to engage within the platform cover at theheel end of a shoe and the other being adapted to engage within theplatform cover at the toe end of the shoe, a support for each of thearms of the heel end turning tool, a support for each of the arms of thetoe end turning tool, and a common means for moving all four supports toadjust the degree of separation of the two heel end turning toolsupports and at the same time to adjust the degree of separation of thetwo toe end turning tool supports, said common means serving to adjustthe shapes of the turning tools simultaneously.

ROBERT H. LAWSON.

